Locking device



O. SCHREIBER LOCKING DEVICE 'sept 7, 19237.

Filed May 19, 1956 2 Sheets-Sheet l lNV NTOR @Q4 y O. SCHREIBER LOCKING DEVICE Sept. 7, i937.

2 sheetsshea 2 Filed May 19, 1936 mm mw @lim 1N N ToR 2 A-rfroRNEY/S rati:

Patented Sept.

LOCKING DEVICE Oscar Schreiber, Wingdale, N. Y. Application May 19, 1936, Serial No. 80,477

3 Claims.

ting away ber leaving only a along the sides of the mortise opening.

weakens the member at that a large portion of the edge of the memthin strip of material This both point and adds to Very the difculty of properly installing the locking device.

An object of this invention is to provide a locking device constructed and arranged to permit its being installed 1n a relatively small opening and thus eliminate the necessity of large mortise openings in the me device is applied.

rnber to which the locking A further object is to provide a locking device possessing such struction and mode after set forth.

These and-other objects which will advantageous features of conof operation as are hereinbe apparent to those skilled in this particular art are accomplished by means of the invention hereinafter described, and illustrated in the accompanying drawings in which,

Fig. 1 is a partial sectional view of a locking mechanism constructed in accordance with one embodiment of this invention, showing the same in place in a door;

Fig. 2 is a similar of Fig. 1;

Fig. 3 is a partial position; and

Figs. and 6 are ing retraction of 1-1 of Fig. 6.

In the illustrated thereof, houses a lo within the casing the inner end bolt l2. the casing by top of the bolt. The spring i form of a key-controlled mechanism for the lock bolt. Fig. 'l is a partial sectional view on the lines tion, a casing l, having the casing and extending view looking from the-right horizontal sectional View of the locking device shown in Figs. 1 and 2;

Fig. 4 is a horizontal sectional View similar to Fig. 3 showing the parts in bolt-retracting sectional views showing one preventembodiment of the invenslots il in opposite sides ck bolt l2 slidably mounted IB and spring pressed outwardly by a coil spring i3 located in the casing between thereof and the inner end of the The bolt is a pin i4 mounted in the top of kept against ejection from into a recess I5 in the 3 normally presses the bolt outwardly into the position shown in Fig. 3 for engagement with an associated shown, in the usual manner. 3 and 4, the bolt l2 and spring PATENT OFFIQE striker plate, not As shown in Figs. i3 are housed within the relatively small diameter casing lll and constitute therewith a unit which can be readily located within a hole of relatively small diameter formed in the edge oi whatever member the locking device is applied to, such as the like.

door i' or the The mechanism for retracting the bolt to the position shown in Fig. door I6,

4., to permit opening of the is adapted to engage an anti-friction member such as the roller il which is located in a slot i8 formed in the center of the bolt coinciding with the slots il in the casing IB. As illustrated i 5': is mounted in a holder I9 the opposite sides of n Fig. 3, the roller pinned in the end of the bolt l2. A bolt-retracting plunger having a beveled face 2i is slidably mounted in a cylinder 22 extending transversely through the slots l l of the bolt l2. The sliding movement of plunger 2U is determined by a pin 23 in der 22 engaging a slot 24 in plunger.

casing l0 and the slot i8 of the bolt the bolt-retracting the cylinthe surface of the It will be apparent that the plunger cylinder 22 locks the bolt casing l0 in place.

The bolt spring I3 normally presses the bolt outwardly into operative position shown in Fig. 3. In this position the roller il has forced the boltretracting plunger to the right, as shown in Fig. 3. The plunger is move d inwardly in the opposite direction into the bolt-retracting position shown in ating yoke 25, the

26 on the plunger 20. The

Figs. 1 and 4, by a plunger-operarms of which engage a collar yoke is pivotally mounted on a pin 2l supported at each end in sides of a housing 28. As illustrated, the housing is threaded to 22, and forms the upper the end of the plunger housing integral part of a door handle 2S, the lower end of which is bolted or otherwise rigidly secured to the door I6.

The yoke 25 is adapted to be operated by a yokeoperating bar 30 engaging an arm 3| on the yoke.

The bar 30 has its lower end handle 29.

32 mounted in the It will be apparent that the means for actuating the bolt-retracting plunger so as to be protected tampering. It will also the door handle to within the door handle, thereby against injury or be apparent that grasping is housed pull the door will automatically shift the bar 30 from the position indicated at the left of Fig. 1

to that Shown on the right.

This actuates the yoke and drives the bolt-retracting plunger 2U inwardly from the position s hoWn in Fig. 3 to v35 is secured to the that shown in Figs. 1 and 4. This forces the beveled face 2l of the plunger against the roller I7 of the bolt, and retracts the bolt as shown in Fig. 4. Release of the handle permits the bolt spring l 3 to return all parts to the position shown in Fig. 3.

When it is desired to have a bolt-retracting mechanism on each side of the door I6, a duplicate bolt-retracting plunger and operating mechanism therefor is provided on each side of the door, asshown in Figs.y 1, 3 and 4, but this mechanism need not be described in detail as it is merely a duplication of the mechanism above set.

forth.

Any form of suitable key-controlled mechanism can be employed to prevent operation of the boltretracting plunger 20, if desired. Figs. 1, 5 and 6 show one form of device suitable for this purpose. As illustrated, it consists of a cylinder 35 having a bolt locking arm 36 mounted in the inner end thereof and rotatable from the inoperative position shown in Fig. 5 to the operative position shown in Fig. 6. Any suit able form of key 38 can be employed to rotate the locking arm 36 from one position to the other..

As shown, the key 38 has a n 39 on the end engaging in a slot 4i] formed in the inner end of the plug. When the bolt-retracting plunger is in the position shown in Fig. 3, the locking arm 35 can be turned bythe key so as to project into a slot 4| formed in the. adjacent face of the plunger Zil. As shown in Fig. l, the key barrel housing: 28 so as to be relatively movable. Hence, when the locking arm is in the position shown in Fig. 6, the bolt 20 can not be moved inwardly into the bolt-retracting position.

The invention can be variously modified and on a plug 31 rotatably adapted within the scope of the appended claims. I claimz- 1. A door lock comprising a slotted slidably mounted spring-pressed bolt, a slotted housing therefor, a bolt retracting mechanism including a plunger housing extending transversely through the slotted 'bolt and bolt housing, a hollow bolt retracting plunger plunger housing, a handle, means associated with said handle for actuating said plunger to retract said bolt, and a locking mechanism mounted within said hollow plunger and operable to prevent movement thereof.

2. A door lock comprising a slotted slidably mounted spring-pressed bolt, a slotted housing therefor, a bolt retracting mechanism including a' plunger housing extending transversely through the slotted bolt and bolt housing, a hollow bolt retracting plunger slidably mounted in said plunger'housing, a handle, means associated with said handle for actuating said plunger to retract said bolt, and'locking mechanism secured to'said handle, extending into said plunger and operable` to engage said plunger to prevent movement thereof.

3. A door lock comprising a slotted slidably.

mounted spring-pressed bolt, a slotted housing therefor, a bolt retracting mechanism including a plunger'housing extending transversely through the slotted bolt and bolt housing, a hollow bolt retracting plunger slidably mounted in said plunger housing, a handle threaded to the end of said plunger housing, means for securing said handle against movement, and a locking mechanism secured to said handle and extending into said plunger and operable to engage said plunger thereof..

to prevent movement Y OSCAR SCHREIBER..

slidably mounted in said 

